Double-stranded DNA consists of two polynucleotides that are arranged such that the nitrogenous bases within one polynucleotide are attached to the nitrogenous bases within another polynucleotide by way of special chemical bonds called hydrogen bonds.t different times during the life cycle of a cell, the DNA that makes up the cell's chromosomes can be tightly compacted into a structure that is visible under a microscope, or it can be more loosely distributed and resemble a pile of string.
Largest Horse Breeds. Samson, a Shire, was said to have weighed 3,300 pounds and stood 7 feet 2 inches tall in the 1850s. Today, Shires are considered the largest of all draft-horse breeds. Other gentle giants include Percherons, Clydesdales, Belgian drafts, Nivernaise and Suffolk punch horses. Some horse breed historians believe that Shires and Belgians are both descendants of the legendary Great Horse of medieval times that was said to have carried armored knights into battle and in tournaments.
The Shire horse is a breed of draught horse (BrE) or draft horse (AmE). The breed comes in many colours, including black, bay and grey. They are a tall breed, with mares standing 16 hands (64 inches, 163 cm) and over and stallions standing 17 hands (68 inches, 173 cm) and over. The breed has an enormous capacity for weight pulling, and Shires have held the world records for both largest overall horse and tallest horse at various times.